McMaster’s visit to Kabul came shortly after the US bomb strike on Afghanistan’s eastern province.

On Thursday, a 22,000-pound GBU-43, or MOAB bomb, which is the largest non-nuclear bomb in the US military arsenal, was dropped from a C-130 military airlift aircraft, targeting an underground complex and tunnels in Afghan province of Nangarhar believed to be used by the Islamic State terrorist group, banned in Russia and many other countries.